IDENTIFICATION CARDS

• US 3,640,009 A
• Filed: 09/09/1969
• Issued: 02/08/1972
• Est. Priority Date: 06/07/1969
• Status: Expired due to Term

• Current Assignee: Eizo Komiyama
• Original Assignee: Eizo Komiyama
• Inventors: Komiyama, Eizo
• Primary Examiner(s): Schnall, Jerome
• Assistant Examiner(s): Contreras, Wenceslao J.
• Application Number:
  US04/856,286
• Time in Patent Office: 882 Days
• Field of Search: 40/2,2.2 283/6,7,8
• US Class Current: 283/88
• CPC Class Codes: B42D 25/00 Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof printing processes to produce identification or security features B41M3/14
• CPC Class Codes: B42D 25/23 Identity cards
• CPC Class Codes: B42D 25/309 Photographs
• CPC Class Codes: B42D 25/318 Signatures
• CPC Class Codes: B42D 25/378 Special inks
• CPC Class Codes: B42D 25/382 absorbing or reflecting infrared light
• CPC Class Codes: B42D 25/387 absorbing or reflecting ultraviolet light
• CPC Class Codes: B42D 25/47 using adhesives
• CPC Class Codes: G07C 9/243 visually, e.g. by comparing in a viewer the written signature with a reference on the pass
• CPC Class Codes: Y10S 283/901 Concealed data

Abstract

An identification system utilizing an identification card which has thereon identifying indicia which is invisible under normal, visible light. The card or other article of identification includes a portion formed with an opening receiving a sheet on which identifying indicia is located, and this identifying indicia includes at least a portrait of the individual who is authorized to use the identification article. The sheet can also carry a signature of this individual, and the nature of the indicia is such that it can be rendered visible by making use of light beyond the visible spectrum, such as ultraviolet light or infrared light, with a suitable filter being located over the sheet with the indicia thereon so as to permit only the desired light to reach the indicia.

Claims

1. In an identification system, an article carrying a normally invisible indicia which can be rendered visible only by use of light beyond the visible spectrum, at least part of said indicia being a positive portrait of the individual authorized to use the article, said indicia also including a signature of the individual authorized to use the article, the article being in the form of a card having a hollow interior where a sheet bearing the signature and portrait is located, and a filter covering the indicia and permitting only light beyond the visible spectrum to reach the same, said sheet being a sheet of paper and said indicia including a signature of ink which absorbs infrared rays and a portrait printed on positive film, said filter covering the sheet permitting only infrared rays to be transmitted through the filter to the sheet to reach the indicia thereon.